Intraday Radio Variability and Micro-Arcsecond Resolution (2009)
Bignall, H, Jauncey, DL, Kedziora-Chudczer, L, Lovell, JEJ, Macquart, JP, Ojha, R, ...
Gravitational wave detection using pulsars: status of the Parkes Pulsar Timing Array project (2008)
Hobbs, G. B., Bailes, M., Bhat, N. D. R., Burke-Spolaor, S., Champion, D. J., Coles, W., ...
The first direct detection of gravitational waves may be made through observations of pulsars. The principal aim of pulsar timing array projects being carried out worldwide is to detect ultra-low...
Lovell, JEJ, Rickett, BJ, Macquart, JP, Jauncey, DL, Bignall, HE, Kedziora-Chudczer, L, ...
We report on the variability of 443 flat-spectrum, compact radio sources monitored using the VLA for 3 days in four epochs at ~4 month intervals at 5 GHz as part of the Micro-Arcsecond...
Lovell, J. E. J., Rickett, B. J., Jauncey, D. L., Bignall, H. E., Kedziora-Chudczer, L., ...
We report on the variability of 443 flat-spectrum, compact radio sources monitored using the VLA for 3 days in four epochs at ~4 month intervals at 5 GHz as part of the Micro-Arcsecond...
Lovell, J. E. J., Rickett, B. J., Macquart, J-P., Jauncey, D. L., Bignall, H. E., Kedziora-Chudczer, L., ...
We report on the variability of 443 flat spectrum, compact radio sources monitored using the VLA for 3 days in 4 epochs at ~ 4 month intervals at 5 GHz as part of the Micro-Arcsecond...
Lovell, JEJ, Rickett, BJ, Macquart, JP, Jauncey, DL, Bignall, HE, Kedziora-Chudczer, L, ...
We report on the variability of 443 flat-spectrum, compact radio sources monitored using the VLA for 3 days in four epochs at ~4 month intervals at 5 GHz as part of the Micro-Arcsecond...
Lovell, JEJ, Rickett, BJ, Macquart, JP, Jauncey, DL, Bignall, HE, Kedziora-Chudczer, L, ...
We report on the variability of 443 flat-spectrum, compact radio sources monitored using the VLA for 3 days in four epochs at ~4 month intervals at 5 GHz as part of the Micro-Arcsecond...
Interstellar scintillation, AGN physics and the SKA (2008)
Bignall, Hayley, Lovell, J, Rickett, B.J., Macquart, Jean-Pierre, Jauncey, J., Kedziora-Chudczer, L., ...
A large fraction of compact, extragalactic radio sources exhibit rapid variability at centimetre wavelengths as their radio emission is scattered by electron density fluctuations in the interstellar...
Pursimo, T, Ojha, R, Jauncey, D, Lovell, JEJ, Dutka, J, Bignall, M, ...
MASIV: The Microarcsecond Scintillation-Induced Variability Survey (2008)
Lovell, JEJ, Jauncey, DL, Senbeil, C, Shabala, S, Bignall, HE, Pursimo, T, ...
Properties of the Scattering Screen in Front of Scintillating Quasar PKS 1257-326 (2008)
Bignall, HE, Jauncey, DL, Lovell, JEJ, Tzioumis, AK, Macquart, JP, Kedziora-Chudczer, L
Observations of Intrahour Variable Quasars: Scattering in our Galactic Neighbourhood (2007)
Bignall, H. E., Jauncey, D. L., Lovell, J. E. J., Tzioumis, A. K., Macquart, J-P., Kedziora-Chudczer, L.
Interstellar scintillation (ISS) has been established as the cause of the random variations seen at centimetre wavelengths in many compact radio sources on timescales of a day or less. Observations...
Angular Broadening of Intraday Variable AGN. II. Interstellar and Intergalactic Scattering (2007)
Lazio, T. J. W., Ojha, R., Fey, A. L., Kedziora-Chudczer, L., Cordes, J. M., Jauncey, D. L., ...
We analyze a sample of 58 multi-wavelength, Very Long Baseline Array observations of active galactic nuclei (AGN) to determine their scattering properties. Approximately 75% of the sample consists of...
Properties of the Scattering Screen in Front of Scintillating Quasar PKS 1257-326 (2007)
Bignall, H. E., Jauncey, D. L., Lovell, J. E. J., Tzioumis, A. K., Macquart, J-P., Kedziora-Chudczer, L.
PKS 1257-326 is a quasar showing extremely unusual, rapid interstellar scintillation (ISS), which has persisted for at least a decade. Simultaneous observations with the VLA and ATCA, combined with...
A Search for Propylene Oxide and Glycine in Sagittarius B2 (LMH) and Orion (2007)
Cunningham, M. R., Jones, P. A., Godfrey, P. D., Cragg, D. M., Bains, I., Burton, M. G., ...
We have used the Mopra Telescope to search for glycine and the simple chiral molecule propylene oxide in the Sgr B2 (LMH) and Orion KL, in the 3-mm band. We have not detected either species, but have...
MASIV:The Microarcsecond Scintillation-Induced Variability Survey (2007)
Lovell, J. E. J., Jauncey, D. L., Senkbeil, C., Shabala, S., Bignall, H. E., Pursimo, T., ...
We are undertaking a large-scale 5 GHz VLA survey of the northern sky to search for rapid intra-day variability (IDV). Over four observing epochs we found that 56% of the sources showed variability...
Microarcsecond scintillation-induced variability (MASIV) survey of the northern sky (2007)
Jauncey, DL, Rickett, BJ, Kedziora-Chudczer, L, Lovell, JEJ, Senkbeil, CE, Shabala, S, ...
We present the results of a large-scale 5-GHz Very Large Array (VLA) survey of the northern sky searching for sources that exhibit intraday variability (IDV). The observations were made over four...
Microarcsecond scintillation-induced variability (MASIV) survey of the northern sky (2007)
Jauncey, DL, Rickett, BJ, Kedziora-Chudczer, L, Lovell, JEJ, Senkbeil, CE, Shabala, S, ...
We present the results of a large-scale 5-GHz Very Large Array (VLA) survey of the northern sky searching for sources that exhibit intraday variability (IDV). The observations were made over four...
Properties of the Scattering Screen in Front of Scintillating Quasar PKS 1257-326 (2007)
Bignall, HE, Jauncey, DL, Lovell, JEJ, Tzioumis, AK, Macquart, JP, Kedziora-Chudczer, L
MASIV: The Microarcsecond Scintillation-Induced Variability Survey (2007)
Lovell, JEJ, Jauncey, DL, Senkbeil, CE, Shabala, S, Bignall, HE, Pursimo, T, ...
Microarcsecond scintillation-induced variability (MASIV) survey of the northern sky (2007)
Jauncey, DL, Lovell, JEJ, Senkbeil, CE, Shabala, S, Bignall, HE, Pursimo, T, ...
A search for propylene oxide and glycine in Sagittarius B2 (LMH) and Orion (2007)
Cunningham, M. R., Jones, P. A., Godfrey, P. D., Cragg, D. M., Bains, I., Burton, M. G., ...
A search for propylene oxide and glycine in Sagittarius B2 (LMH) and Orion (2007)
Cunningham, M. R., Jones, P. A., Godfrey, P. D., Cragg, D. M., Bains, I., Burton, M. G., ...
Microarcsecond scintillation-induced variability (MASIV) survey of the northern sky (2007)
Jauncey, DL, Rickett, BJ, Kedziora-Chudczer, L, Lovell, JEJ, Senkbeil, CE, Shabala, S, ...
We present the results of a large-scale 5-GHz Very Large Array (VLA) survey of the northern sky searching for sources that exhibit intraday variability (IDV). The observations were made over four...
International Colloquium on Scattering and Scintillation in Radio Astronomy (2006)
Shishov, V I, Coles, W A, Rickett, B J, Bird, M K, Efimov, A I, Samoznaev, L N, ...
Topics of the Colloquium: a) Interplanetary scintillation b) Interstellar scintillation c) Modeling and physical origin of the interplanetary and the interstellar plasma turbulence d) Scintillation...
Shishov, V. I., Coles, W. A., Rickett, B. J., Bird, M. K., Efimov, A. I., Samoznaev, L. N., ...
Topics of the Colloquium: a) Interplanetary scintillation b) Interstellar scintillation c) Modeling and physical origin of the interplanetary and the interstellar plasma turbulence d) Scintillation...
Bignall, H. E., Jauncey, D. L., Lovell, J. E. J., Tzioumis, A. K., Kedziora-Chudczer, L.
We report measurements of time delays of up to 8 minutes in the centimeter wavelength variability patterns of the intra-hour scintillating quasar PKS 1257-326 as observed between the VLA and the ATCA...
First Results from MASIV: the Microarcsecond Scintillation-Induced Variability Survey (2005)
Bignall, HE, Lovell, JEJ, Jauncey, DL, Kedziora-Chudczer, L, Macquart, JP, Rickett, BJ, ...
Interstellar scintillation as a probe of microarcsecond scale structure in quasars (2004)
Bignall, H. E., Jauncey, D. L., Lovell, J. E. J., Kedziora-Chudczer, L., Macquart, J-P., Tzioumis, A. K., ...
Observations over the last two decades have shown that a significant fraction of all flat-spectrum, extragalactic radio sources exhibit flux density variations on timescales of a day or less at...
2QZJ215454.3-305654: a radio-quiet BL Lac object or lineless QSO? (2004)
Londish, D., Heidt, J., Boyle, B. J., Croom, S. M., Kedziora-Chudczer, L.
High signal-to-noise spectroscopy has established a redshift of z=0.494 for the source 2QZJ215454.3-305654, originally selected from the 2dF/6dF QSO Redshift Surveys as one of 45 candidate BL Lac...
The Radio Variability of the Gravitational Lens PMN J1838-3427 (2004)
Winn, JN, Lovell, JEJ, Bignall, H, Gaensler, BM, Getts, TJ, Kedziora-Chudczer, L, ...
First Results from MASIV: The Micro-Arcsecond Scintillation-Induced Variability Survey (2003)
Lovell, J., Jauncey, D., Bignall, H., Kedziora-Chudczer, L., Macquart, J-P., Rickett, B., ...
We are undertaking a large-scale, Micro-Arcsecond Scintillation-Induced Variability (MASIV) survey of the northern sky, Dec > 0 deg, at 4.9 GHz with the VLA. Our objective is to construct a sample of...
First results from MASIV: The microarcsecond scintillation-induced variability survey (2003)
Lovell, J. E.J., Jauncey, D. L., Bignall, H. E., Kedziora-Chudczer, L., Macquart, J-P., Rickett, B. J., ...
Bignall, H. E., Jauncey, D. L., Lovell, J. E.J., Tzioumis, A. K., Kedziora-Chudczer, L., Macquart, J-P., ...
Copyright © 2003 The American Astronomical Society
Interstellar scintillation and annual cycles in the BL Lac source PKS 1519-273 (2003)
Jauncey, D. L., Johnston, H. M., Macquart, J-P., Bignall, H. E., Lovell, J. E.J., Kedziora-Chudczer, L., ...
Variability in GPS sources (2003)
Jauncey, D. L., King, E. A., Bignall, H E., Lovell, J. E.J., Kedziora-Chudczer, L., Tzioumis, A. K., ...
First results from MASIV: The microarcsecond scintillation-induced variability survey (2003)
Lovell, J. E.J., Jauncey, D. L., Bignall, H. E., Kedziora-Chudczer, L., Macquart, J-P., Rickett, B. J., ...
Bignall, H. E., Jauncey, D. L., Lovell, J. E.J., Tzioumis, A. K., Kedziora-Chudczer, L., Macquart, J-P., ...
Copyright © 2003 The American Astronomical Society
Interstellar scintillation and annual cycles in the BL Lac source PKS 1519-273 (2003)
Jauncey, D. L., Johnston, H. M., Macquart, J-P., Bignall, H. E., Lovell, J. E.J., Kedziora-Chudczer, L., ...
Variability in GPS sources (2003)
Jauncey, D. L., King, E. A., Bignall, H E., Lovell, J. E.J., Kedziora-Chudczer, L., Tzioumis, A. K., ...
First Results from MASIV: The Microarcsecond Scintillation-Induced Variability Survey (2003)
Lovell, JEJ, Jauncey, DL, Bignall, HE, Kedziora-Chudczer, L, Macquart, JP, Rickett, BJ, ...
Interstellar Scintillation and Annual Cycles in the BL LAC Source PKS 1519-273 (2003)
Jauncey, DL, Johnston, HM, Bignall, HE, Lovell, JEJ, Kedziora-Chudczer, L, Tzioumis, AK, ...
Variability in GPS Sources (2003)
Jauncey, DL, King, EA, Bignall, HE, Lovell, JEJ, Kedziora-Chudczer, L, Tzioumis, AK, ...
Bignall, H. E., Jauncey, D. L., Lovell, J. E. J., Tzioumis, A. K., Kedziora-Chudczer, L., ...
Rapid radio intra-day variability (IDV) has been discovered in the southern quasar PKS 1257-326. Flux density changes of up to 40% in as little as 45 minutes have been observed in this source, making...
New results from an ATCA study of intraday variable radio sources (2002)
Bignall, H. E., Jauncey, D. L., Kedziora-Chudczer, L., Lovell, J. E., Macquart, J., Rayner, D. P., ...
© CSIRO 2002
New results from an ATCA study of intraday variable radio sources (2002)
Bignall, H. E., Jauncey, D. L., Kedziora-Chudczer, L., Lovell, J. E., Macquart, J., Rayner, D. P., ...
© CSIRO 2002
Examples of extreme intraday variability (2001)
Kedziora-Chudczer, L., Jauncey, D. L., Wieringa, M. A., Tzioumis, A. K., Bignall, H. E.
Radio intra-day variability: Answers and questions (2001)
Jauncey, D. L., Kedziora-Chudczer, L., Lovell, J. E. J., Macquart, J-P., Nicolson, G. D., Perley, R. A., ...
Examples of extreme intraday variability (2001)
Kedziora-Chudczer, L., Jauncey, D. L., Wieringa, M. A., Tzioumis, A. K., Bignall, H. E.
Radio intra-day variability: Answers and questions (2001)
Jauncey, D. L., Kedziora-Chudczer, L., Lovell, J. E. J., Macquart, J-P., Nicolson, G. D., Perley, R. A., ...
Radio Intra-day Variability: Answers and Questions (2001)
Jauncey, DL, Kedziora-Chudczer, L, Lovell, JEJ, Macquart, JP, Nicolson, GD, Perley, RA, ...
Strong, Variable Circular Polarization in PKS 1519-273 (2000)
Kedziora-Chudczer, L., Rayner, D. P., Jauncey, D. L.
We report strong variability in the circular and linear polarization of the intraday variable source PKS 1519-273. The circular polarization varies on a timescale of hours to days at frequencies...
PKS 1718-649, the Nearest GPS Radio Source (1998)
Jauncey, DL, Tingay, SJ, Preston, RA, Reynolds, JE, Tzioumis, AK, King, EA, ...
Multi-Frequency VLBI Observations of the GPS Source 1934-638 (1998)
Tzioumis, AK, King, EA, Reynolds, JE, Jauncey, DL, Gough, RG, Preston, RA, ...
PKS 0405--385: the smallest radio quasar? (1997)
Kedziora-Chudczer, L., Jauncey, D. L., Wieringa, M. H., Walker, M. A., Nicolson, G. D., Reynolds, J. E., ...
We have observed profound variability in the radio flux density of the quasar PKS 0405-385 on timescales of less than an hour; this is unprecedented amongst extragalactic sources. If intrinsic to the...
The Nearest GHz Peaked Spectrum Radio Galaxy, PKS 1718-649 (1997)
Tingay, SJ, Jauncey, DL, Reynolds, JE, Tzioumis, AK, King, EA, Preston, RA, ...